A convict in the penal colony. A loud and crass individual, Dabby is Mary’s closest friend in the settlement, which is why she decides that—since Mary’s going to be in the play—she wants to act in The Recruiting Officer, too. This is much to Ralph’s chagrin, since Dabby isn’t as talented as Mary. Nevertheless, he gives her a small role, and Mary helps her learn her lines, since she can’t read.